A171219 A138101(n)+A168142(n).

5, 5, 21, 21, 21, 21, 21, 21, 21, 21, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 121, 121, 121, 121, 121, 121, 121, 121, 121, 121, 121, 121, 121, 121, 121, 121, 121, 121, 121, 121, 121, 121, 121, 121, 121, 121, 121, 121, 121, 121, 121

Offset

1,1

Comments

This here basically repeats entries A168388(2k+1) 2*k^2 times for k=1,2,....

The construction is similar to A168234.

Links

Table of n, a(n) for n=1..59.

Crossrefs

Sequence in context: A352315 A283212 A283250 * A325893 A146043 A116400

Adjacent sequences: A171216 A171217 A171218 * A171220 A171221 A171222

Keyword

nonn,easy,less

Author

Paul Curtz, Dec 05 2009

Extensions

Comments tightened - R. J. Mathar, Nov 24 2010

Status

approved